MDM Trouble Report for 2010 Sep 9 Telescope: 1.3m Observer(s): Dietrich (OSU) Instrument: CCDS Problem(s) Encountered: The only problem this night was the auto-guider. After a few successful cycles, the guide probe started to oscillate in RA and the guide star was finally thrown out of the guide box by 10 to 15 arcsec. The target was also moved out of the slit and needed to be re-centered. This problem was present over the entire night, independent from the impact of wind which induced motions of a few to 20 arcsec. Hence, I was guiding the good old fashioned way. Since the telescope tracking was working very well and only minor corrections is RA and Dec were necessary. ------------------------------ Submitted on 2010 Sep 10 [5:45:49]